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Full-Text Articles in Engineering
Harmony Search For Parameter Estimation In Vapor-Liquid Equilibrium Modeling, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernandez, Juan Jose Soto-Bernal
Harmony Search For Parameter Estimation In Vapor-Liquid Equilibrium Modeling, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernandez, Juan Jose Soto-Bernal
Adrian Bonilla-Petriciolet
This study introduces the application of Harmony Search (HS) method for solving the parameter estimation problem in vapor-liquid equilibrium data modeling. The performance of this novel stochastic optimization strategy has been tested using several sets of binary vapor-liquid equilibrium data with local composition models and the classical approach of least squares. Our results indicate that HS is a promising meta-heuristic for solving global optimization problems in the modeling of phase equilibrium and may offer a better performance than those obtained using current stochastic methods such as the Simulated Annealing or the Particle Swarm Optimization.
Control Properties Of Thermally Coupled Extractive Distillation Sequences, Jose De Jesus Ibarra-Sánchez, Juan Gabriel Segovia-Hernandez, Salvador Hernandez, Hector Hernandez-Escoto, Adrian Bonilla-Petriciolet
Control Properties Of Thermally Coupled Extractive Distillation Sequences, Jose De Jesus Ibarra-Sánchez, Juan Gabriel Segovia-Hernandez, Salvador Hernandez, Hector Hernandez-Escoto, Adrian Bonilla-Petriciolet
Adrian Bonilla-Petriciolet
The structure of the thermally coupled distillation systems offers some control challenges arising from the transfer of vapor (or liquid) streams between the columns. In particular, the presence of recycle streams for coupled schemes has influenced the notion that control problems might be expected during the operation of those systems with respect to the rather well-known behavior of conventional distillation sequences. In this work, we analyze the control properties of thermally coupled extractive distillation schemes. The control properties are analyzed with the application of the singular value decomposition technique and a closed-loop analysis. The results showed that the energy savings …
Optimization Of An Extractive Dividing Wall Column Using Genetic Algorithms, Cristofer Bravo-Bravo, Juan Gabriel Segovia-Hernandez, Salvador Hernandez, Claudia Gutierrez-Antonio, Adrian Bonilla-Petriciolet, Abel Briones-Ramirez
Optimization Of An Extractive Dividing Wall Column Using Genetic Algorithms, Cristofer Bravo-Bravo, Juan Gabriel Segovia-Hernandez, Salvador Hernandez, Claudia Gutierrez-Antonio, Adrian Bonilla-Petriciolet, Abel Briones-Ramirez
Adrian Bonilla-Petriciolet
This work proposes an extractive dividing wall distillation column, optimal designs for which are obtained through a constrained stochastic multiobjective optimization technique. The stochastic procedure allows manipulate 15 variables simultaneously; six are continuous and the rest of them are integer. All resulting optimal designs are rigorous, since the optimization procedure is coupled to Aspen PlusTM. Several case studies are used to show the feasibility of performing extractive separations in dividing wall distillation columns. The numerical performance shows that this method appears to be robust and suitable in the design of intensified distillation systems (with dividing wall).
Prediction Of Steady State Input Multiplicities For The Reactive Flash Separation Using Reaction-Invariant Composition Variables, Jose Enrique Jaime-Leal, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernandez, Salvador Hernandez
Prediction Of Steady State Input Multiplicities For The Reactive Flash Separation Using Reaction-Invariant Composition Variables, Jose Enrique Jaime-Leal, Adrian Bonilla-Petriciolet, Juan Gabriel Segovia-Hernandez, Salvador Hernandez
Adrian Bonilla-Petriciolet
In this study, we report a new approach for predicting and analyzing steady state input multiplicities in reactive flash separation processes. Necessary conditions are suggested to detect these multiple steady states using reaction-invariant composition variables. Our results suggest that the conditions proposed for identifying the presence of input multiplicities of non-reactive systems are useful for the analysis of reactive systems if transformed composition variables are employed. Performance of our approach is illustrated using MTBE production as case of study.
A Short Method To Calculate Reactive Residue Curve Maps, Marcelino Carrera-Rodriguez, Juan Gabriel Segovia-Hernandez, Adrian Bonilla-Petriciolet
A Short Method To Calculate Reactive Residue Curve Maps, Marcelino Carrera-Rodriguez, Juan Gabriel Segovia-Hernandez, Adrian Bonilla-Petriciolet
Adrian Bonilla-Petriciolet
Reactive residue curve maps (RRCM) are useful for the design of reactive distillation columns as a tool to establish feasible zones of reaction-separation. The calculation of RRCM usually involves great computational effort due to the nonlinearity of the model equations and its iterative nature for the determination of reactive phase equilibrium. In this study, a simplified method for the generation of RRCM is presented. This method is based on the application of reaction-invariant composition variables and assumes that the phase equilibrium constants and the relative volatilities are independent of the temperature. These assumptions allow avoiding iterative calculations for obtaining a …
A Short Method For The Design Of Reactive Distillation Column, Marcelino Carrera-Rodriguez, Juan Gabriel Segovia-Hernandez, Adrian Bonilla-Petriciolet
A Short Method For The Design Of Reactive Distillation Column, Marcelino Carrera-Rodriguez, Juan Gabriel Segovia-Hernandez, Adrian Bonilla-Petriciolet
Adrian Bonilla-Petriciolet
In this study, a short method for the design of reactive distillation is presented. The method is based on distillation lines and tray-by-tray calculations, and a new strategy is suggested to locate the reflux ratio, the number of stages, and feed tray. The material balances are solved from the outside (top and bottom) to the inside of the distillation column (feed), to ensure that the product compositions are met. To reduce the numerical difficulties, the method is based on the application of reaction-invariant composition variables. The synthesis of MTBE with the presence of inert is used as case of study …